Based on a photo from another poster I mounted on angle aluminum four 80mm x 80mm x 15mm slow turning fans to blow against heat transfer fins inside the refrigerator. Collectively they draw 0.2 amps. Fridge operates much more efficiently now with no ice buildup on fins and uniform temperature throughout. Fans are nearly inaudible in cabin. Each fan came with a yellow speed control wire which I did not use but insulated its end with heat shrink tubing from Harbor Freight.